atmega103 ATMEL Corporation, atmega103 Datasheet - Page 139

• Manufacturer Part Number: atmega103
• Description: Atmega103 8-bit With 128k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Table of Contents
0945I–AVR–02/07
Features................................................................................................. 1
Description ............................................................................................ 3
Architectural Overview......................................................................... 8
Timer/Counters ................................................................................... 38
Watchdog Timer.................................................................................. 55
EEPROM Read/Write Access............................................................. 57
Serial Peripheral Interface – SPI........................................................ 60
UART.................................................................................................... 66
Analog Comparator ............................................................................ 75
Analog-to-Digital Converter............................................................... 77
Pin Configuration .................................................................................................. 2
Block Diagram ...................................................................................................... 4
Pin Descriptions.................................................................................................... 5
Clock Options ....................................................................................................... 6
General-purpose Register File.............................................................................. 9
ALU – Arithmetic Logic Unit................................................................................ 10
ISP Flash Program Memory ............................................................................... 10
SRAM Data Memory........................................................................................... 10
Program and Data Addressing Modes................................................................ 12
EEPROM Data Memory...................................................................................... 17
Memory Access Times and Instruction Execution Timing .................................. 17
I/O Memory ......................................................................................................... 18
Reset and Interrupt Handling.............................................................................. 23
Sleep Modes....................................................................................................... 36
Timer/Counter Prescalers................................................................................... 38
8-bit Timer/Counters T/C0 and T/C2 .................................................................. 39
16-bit Timer/Counter1......................................................................................... 47
Prevent EEPROM Corruption ............................................................................. 59
Data Modes ........................................................................................................ 62
Data Transmission.............................................................................................. 66
Data Reception ................................................................................................... 68
UART Control ..................................................................................................... 70
Feature list: ......................................................................................................... 77
Operation ............................................................................................................ 78
Prescaling ........................................................................................................... 78
ADC Noise Canceler Function............................................................................ 80
ADC Noise Canceling Techniques ..................................................................... 82
ATmega103(L)
i